Topic: 在java中如何实现同时对sqlserver中的多个库的查询啊? |
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1.在java中如何实现同时对sqlserver中的多个库的查询啊? | Copy to clipboard |
Posted by: suntrees Posted on: 2004-10-19 15:38 偶不会啊,求各位救命啊! |
2.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: why Posted on: 2004-10-19 17:11 Why would you like to do this? Please tell us the context... |
3.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: hohaischooldays Posted on: 2004-10-19 17:19 "同时"到什么程度,是一个查询? |
4.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: scud Posted on: 2004-10-19 17:21 ADB..ATable BDB..BTable |
5.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: suntrees Posted on: 2004-10-19 18:16 比如我想从a库的a表中和b库的b表中取出所有的数据,请问sql语句应该怎么写? 是不是这样: select * from a..a union all select * from b..b啊? 我怎么试了不行呢? |
6.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: mozilla Posted on: 2004-10-20 10:51 你两个表的结构完全相同吗? |
7.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: hohaischooldays Posted on: 2004-10-20 17:35 我个人认为这样在一个查询中进行两个数据库中查询是不可能的,可以这样想啊,我们在查询前一定要建立数据库连接,当我们建立另一个数据库连接时前一个数据库连接已经丢失,在当前连接下查询前一个数据库中的表应该是不可能的!(个人意见,仅供参考) |
8.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: scud] | Copy to clipboard |
Posted by: hohaischooldays Posted on: 2004-10-20 17:38 scud wrote: scud老兄,你说的清楚一点嘛! |
9.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: suntrees Posted on: 2004-10-20 18:15 我已经会了,呵呵 例如,如果想在第一个链接中查B库的数据,SQL语句可以这样写: select * from a..a.a,b..b.b,这样就可以了!我已经试过了 |
10.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: hohaischooldays Posted on: 2004-10-21 23:18 啊,是不是只有sqlserver可以啊,我在oracle和DB2中怎么都不行啊,根本就不认识那个.. 无知中啊,汗颜! |
11.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: qq6600 Posted on: 2004-10-24 10:31 新手,也在迷茫中,希望老手指点迷经。 |
12.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: sgc_hy Posted on: 2004-11-05 16:33 看不明! |
13.Re:在java中如何实现同时对sqlserver中的多个库的查询啊? [Re: suntrees] | Copy to clipboard |
Posted by: secretescapeby Posted on: 2004-11-05 20:39 好像是不行的吧 |
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